Architect & specification hub
Everything a specifier needs to write sprayed cork into the next project.
NBS clauses, BBA certification, EN 13501 fire performance, vapour-permeability and thermal data, CAD details, RIBA-aligned CPD and full RIBA Stage 2–5 support. Ready to drop straight into your specification.
What's in the pack
A specification pack written for specifiers, not marketers.
Draft NBS Chorus and Source clauses for both external and internal cork systems. BBA Agrément certification. EN 13501 reaction-to-fire test results (Class B-s1, d0). Thermal conductivity, vapour permeability, water absorption, adhesion and accelerated-weathering data. DWG and PDF standard details covering reveals, sills, parapets and movement joints.
Bespoke details prepared free for any live project — typically returned within 48 hours. Site-specific mock-ups and substrate trials available on request, particularly useful where the building has mixed substrates or a complex façade history.
RIBA Plan of Work support
We turn up across Stages 2 to 5 — not just the install.
Stage 2–3: feasibility, substrate appraisal, embodied-carbon comparison against EWI/IWI alternatives, early-stage cost benchmarking.
Stage 4: detailed NBS specification, bespoke CAD detailing, performance specification clauses, contractor approval process.
Stage 5: site mock-ups, installer pre-qualification, programme advice, site supervision attendance, snagging and PC sign-off.
Resources available
Spec-grade documentation, not marketing brochures.
NBS-ready clauses
Draft Chorus / Source clauses for external and internal systems.
BBA & EN certification
Full test pack: fire (EN 13501), thermal, vapour, weathering, adhesion.
DWG & PDF details
Standard wall, reveal, sill, parapet and junction details. Bespoke on request.
Embodied-carbon data
EPD figures and provenance docs for BREEAM, SKA, LEED, GRESB and net-zero reporting.
RIBA Stage 2–5 support
Feasibility, specification, contractor approval, site supervision, PC sign-off.
Technical helpline & CPD
Direct line to our technical team. RIBA-aligned CPD seminar delivered in-studio or remote.
Specifier FAQs
The questions architects and specifiers ask.
- What NBS specification clauses are available?
- We provide draft NBS clauses for both the external coating system and the internal IWI variant, written to plug into NBS Chorus or Source. Includes substrate preparation, primer, two-coat sprayed cork application, mesh reinforcement where applicable, and decorative top-coat options.
- What certification and test data do you supply?
- BBA certification, fire performance to EN 13501-1 (rated B-s1, d0), thermal conductivity (λ ≈ 0.065 W/mK), vapour permeability (Class 1, μ < 5), water absorption (W3), adhesion test data, and accelerated weathering / UV stability results. Full data pack available on request.
- Do you provide CAD details and section drawings?
- Yes — DWG and PDF standard details covering wall build-ups, window reveal returns, sill and head detailing, parapet terminations, junctions with EWI and IWI systems, and movement-joint detailing. Bespoke details prepared on request for specific projects.
- Can you support the project from RIBA Stage 2 through 5?
- Yes. Early-stage feasibility and substrate appraisal (RIBA 2–3), detailed specification and NBS clauses (Stage 4), site mock-ups, contractor approval and tender support (Stage 4–5), site supervision and CPD for the installing team (Stage 5).
- Is there a CPD presentation for architects?
- Yes — a RIBA-aligned CPD seminar on breathable thermal coatings, embodied carbon in retrofit, and specification of natural insulation systems. Delivered in-person at your studio or via video conference. Typically 45 minutes plus Q&A.
- What's the warranty backing for specified projects?
- 25-year manufacturer product warranty on the cork system, plus our 10-year workmanship warranty on installation. Insurance-backed and assignable to the building owner on project completion.